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LM2576R-ADJ
+StücklisteIC REG BUCK ADJ 3A TO263-5L
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HerstellerTAEJIN
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Herstellerteil #LM2576R-ADJ
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Datenblatt LM2576R-ADJ DataSheet
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Spezifikationen
| Attribut | Wert |
| Series | SIMPLE SWITCHER® |
| PartStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Max) | 40V |
| Voltage-Output(Min/Fixed) | 1.23V |
| Voltage-Output(Max) | 37V |
| Current-Output | 3A |
| Frequency-Switching | 52kHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| SupplierDevicePackage | TO-263-5L |
Übersicht
Description
Key features of the LM2576R-ADJ include a fixed switching frequency of 52 kHz, which minimizes the size of external components and reduces electromagnetic interference (EMI). It also features built-in thermal shutdown, current limiting, and output transistor safe area compensation to enhance reliability and safety.
This regulator is well-suited for applications in industrial automation, battery-powered devices, and embedded systems that require efficient power conversion solutions. Its ease of use, robust performance, and minimal external components make it an ideal choice for both professional engineers and hobbyists.
Equivalent
1. LM2596-ADJ: A similar adjustable voltage regulator with a 3A output.
2. L4970A: A switch-mode step-down voltage regulator.
3. MC34063A: A versatile DC-DC converter, though with a lower current rating.
4. TPS54331: A high-efficiency step-down regulator with 3A output.
5. XL4015: A 5A adjustable DC-DC buck converter module.
Ensure compatibility based on specific requirements like input voltage, switching frequency, and package type.
Features
1. Wide Input Voltage Range: Operates from 4V to 40V, making it suitable for various applications.
2. Adjustable Output Voltage: Allows output voltage customization from 1.23V to 37V by using an external resistor divider.
3. Output Current: Capable of delivering up to 3A of continuous output current.
4. Efficiency: High efficiency up to 90%, reducing power loss and heat.
5. Simplified Design: Requires minimal external components, simplifying the design process.
6. Fixed Frequency: Operates at a fixed frequency of 52 kHz, optimizing performance and reducing noise.
7. Thermal Shutdown: Includes thermal protection to prevent overheating.
8. Current Limit Protection: Provides protection against overcurrent conditions.
9. Low Output Ripple Voltage: Ensures stable and consistent output voltage.
10. Package Options: Available in TO-220 and TO-263 packages for flexibility in board design.
These features make the LM2576R-ADJ an ideal choice for efficient and reliable DC-DC conversion in a wide range of electronic applications.
Pinout
1. Pin 1 (Vin): This is the input voltage pin where the unregulated input voltage is applied.
2. Pin 2 (Output): This pin provides the regulated output voltage.
3. Pin 3 (Ground): This is the ground pin and is connected to the ground of the input and output.
4. Pin 4 (Feedback): This pin is used to set the output voltage by connecting it to a voltage divider network.
5. Pin 5 (ON/OFF): This pin is used for enabling or disabling the regulator. Connecting it to ground will enable the regulator, while connecting it to a voltage above 1.2V will disable it.
The LM2576R-ADJ is popular for its efficiency and simplicity in power supply designs, supporting an output current of up to 3A.